diff --git a/Cargo.lock b/Cargo.lock
index f376140a..c6c08ba7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -260,9 +260,9 @@ dependencies = [
 
 [[package]]
 name = "der"
-version = "0.8.0-rc.9"
+version = "0.8.0-rc.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9d8dd2f26c86b27a2a8ea2767ec7f9df7a89516e4794e54ac01ee618dda3aa4"
+checksum = "02c1d73e9668ea6b6a28172aa55f3ebec38507131ce179051c8033b5c6037653"
 
 [[package]]
 name = "either"
diff --git a/Cargo.toml b/Cargo.toml
index ec4ad9cd..aa414f24 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ rust-version = "1.85"
 subtle = { version = "2.6", default-features = false }
 
 # optional dependencies
-der = { version = "0.8.0-rc.9", optional = true, default-features = false }
+der = { version = "0.8.0-rc.10", optional = true, default-features = false }
 hybrid-array = { version = "0.4.5", optional = true, features = ["subtle"] }
 num-traits = { version = "0.2.19", default-features = false }
 rand_core = { version = "0.10.0-rc-2", optional = true, default-features = false }